baber/WOPTO huggingface dataset:
Patent KR-20190064440-A (KR)
Title: Wafer dividing method and wafer dividing apparatus
Inventor: NAKAMURA MASARU
IPC: H01L21/67
Filed: 2018-11-07
Abstract: Provided are a wafer dividing method and a wafer dividing apparatus, which can divide a wafer, wherein division start points are formed, into separate chips and a gap between adjacent chips can be maintained to be a gap when divided. The wafer dividing method comprises: a mounting step of putting an adhesive tape (6) in a dividing apparatus (12) to mount the wafer (2) held in a ring type frame (4); an enlargement step of enlarging the adhesive tape (6) to divide the wafer (2) into the separate chips and to form the gap between the adjacent chips by actuating an estrangement unit (18) in a state of not applying absorption force of a wafer maintenance unit (14) to the wafer (2) mounted in the dividing apparatus (12); an absorption maintaining step of applying the absorbing force of the wafer maintenance unit (14) in a state of enlarging the adhesive tape (6) to position the adhesive tape (6) and to absorb and maintain the wafer (2); and a contraction step of making the wafer maintenance unit (14) approach a frame fixation unit (16) until a maintenance surface gets coincident with a fixation surface and heating and contracting the adhesive tape (6), eliminating the loosening between the wafer (2) and the ring type frame (4).
Patent KR-20200055582-A (KR)
Title: Electrocardiogram signal diagnostic parameter extraction device and extraction method
Inventor: KIM DONGCHEOL
IPC: A61B5/352
Filed: 2018-11-13
Abstract: The present invention relates to an electrocardiogram (ECG) signal diagnostic parameter extraction device applicable to various kinds of healthcare and portable monitoring systems. According to the present invention, the ECG signal diagnostic parameter extraction device comprises: an ECG signal input unit receiving an ECG signal including a plurality of pieces of sample data; a first buffer including a plurality of storage spaces, wherein each of the plurality of pieces of sample data inputted with time is sequentially stored in each of the plurality of storage spaces of the first buffer; a peak detection unit comparing at least two of the plurality of pieces of sample data to detect peak sample data from the plurality of pieces of sample data; a second buffer storing, in a part of the storage space thereof, the current sample data, which is the peak sample data, and each of L1 previous sample data from first previous sample data of the current sample data to L1^th previous sample data of the current sample data, and storing, in another part of the storage space thereof, each of L2 next sample data from first next sample data of the current sample data to L2^th next sample data of the current sample data, wherein L1 and L2 are natural numbers; a third buffer newly storing an average between values stored in the second buffer and values stored in the third buffer in the storage space thereof; and a diagnostic parameter extraction unit using at least one from the values stored in the second buffer and the values previously or newly stored in the third buffer to extract a diagnostic parameter for the ECG signal.
Patent KR-20190055769-A (KR)
Title: Mn4C MANGANESE CARBIDE MAGNETIC SUBSTANCE AND MANUFACTURING METHOD THEREOF
Inventor: CHOI CHUL JIN
IPC: C01B32/914
Filed: 2018-11-15
Abstract: The present invention relates to an Mn4C manganese carbide magnetic substance, which can be used in case of requiring thermal magnetic stability, and a manufacturing method thereof. The Mn4C manganese carbide magnetic substance of the present invention exhibits diffraction peaks of crystal planes (111, 200, 220, 311, 222) at 2θ values of 40°, 48°, 69°, 82° and 88°, respectively as a result of the XRD analysis.
Patent KR-20190078484-A (KR)
Inventor: SOHN EUN HO
IPC: C08L33/08
Filed: 2018-11-19
Abstract: According to an embodiment of the present invention, provided is a fluorinated polymer represented by chemical formula 1. The fluorinated polymer provided in one aspect of the present invention is able to obtain low surface energy and high light transmittance, thereby being applied to various applications requiring such characteristics. In particular, coating on glass is able to lower the surface energy to 19 mN/m or less and increase light transmittance by 2% or more. At the same time, the present invention has an effect of exhibiting excellent pencil strength. The fluorinated polymer provided in one aspect of the present invention can be applied to membrane materials and surface coating of various products due to high solubility in common organic solvents despite very low surface energy during the coating. Moreover, the present invention has excellent adhesive ability on the surface of a base material and can be applied to various fields such as a condenser and a solar battery in glass for vehicle, building exteriors, freshwater, or power plants by enabling a curing process.
Patent KR-20200071796-A (KR)
Title: Apparatus for measuring air quality and system therefor
Inventor: SANG IN KIM
IPC: G08B21/18
Filed: 2018-11-29
Abstract: The present invention relates to an air quality measurement apparatus to easily measure the amount of particulate matter included in the air and a system therefor. According to the present invention, the air quality measurement apparatus comprises: a light scattering measurement unit emitting light to the air from which floating particulate matter is removed to measure a first current based on the scattered light; an alpha ray ionization measurement unit radiating alpha rays to the air to measure an ionized second current; a beta ray ionization measurement unit radiating beta rays to the air to measure an ionized third current; and a data processing unit determining a first concentration of particulate matter and a second concentration of moisture with respect to the first, second, and third currents based on first, second, and third proportional constant set values set by calculating the concentration of air, particulate matter, and moisture inside a reference chamber and calculating a measurement error of the first and second concentrations through machine learning/deep learning to determine the final concentration of particulate matter.
Patent KR-20200067664-A (KR)
Inventor: CHO SEONG HWAN
IPC: G06N3/063
Filed: 2018-12-04
Abstract: A multiplication and accumulation (MAC) operation circuit used in a machine learning operation, according to an embodiment of the present invention, comprises: a resistance unit in which one end is connected to a supply voltage terminal; a plurality of single MOS transistor elements which is connected in parallel between the other end of the resistance unit and a switch connected to the ground, receives a gate signal corresponding to an input value for machine learning according to switching of the switch according to a control signal of a control unit, and outputs a current signal to which a machine learning weight value is applied; and an output node connected to a node at the other end of the resistance unit to accumulate and output current outputs of the plurality of single MOS transistor elements.
Patent KR-20200069579-A (KR)
Inventor: KIM CHUL OK
IPC: A61H1/00
Filed: 2018-12-07
Abstract: The present invention relates to a scoliosis correction device, including: a correction board having a plurality of through holes penetrating a plate surface and forming a correction space; a board frame supporting the correction board and standing on the floor; and a plurality of correction rods that are selectively and detachably fitted to the plurality of through holes of the correction board supported on the board frame to set a patient′s scoliosis correction position on the correction board.
Patent KR-20200072105-A (KR)
Inventor: PARK JAE SEOK
IPC: G06F40/20
Filed: 2018-12-12
Abstract: The present invention relates to a vehicle infotainment system capable of providing information considering user convenience by using voice and touch at the same time, a control method thereof, and a vehicle including the same. The vehicle infotainment system comprises: a microphone part into which a user voice command is inputted; a speaker part outputting search information corresponding to the user voice command in voice; a display part displaying the search information corresponding to the user voice command in text; and a control part controlling the microphone part, the speaker part, and the display part, wherein the control part obtains search information corresponding to the user voice command when the user voice command is inputted, checks whether there is a deletion keyword in the obtained search information, removes a deletion keyword from the search information when there is the deletion keyword in the search information, and controls the speaker part and the display part to output the search information from which the deletion keyword has been removed as voice and text.
Patent KR-20180136422-A (KR)
Inventor: KIMURA HAJIME
IPC: G02F1/1368
Filed: 2018-12-14
Abstract: The present invention relates to a display device which can control a gradient of an electric field applied between electrodes, and can apply an optimal electric field between the electrodes in order to broaden a space between the electrodes driving liquid crystal. The display device comprises: a first electrode formed on a substrate; an insulating film formed on the substrate and the first electrode; a thin film transistor formed on the insulating film, and having a semiconductor film on which a source, a channel region, and a drain are formed; a second electrode being an upper layer than the semiconductor film, positioned on the top of the first electrode, and having a first opening pattern; and liquid crystal arranged on the top of the second electrode.
Patent KR-20200074775-A (KR)
Inventor: PARK MIN HYEOK
IPC: A47K5/12
Filed: 2018-12-17
Abstract: The present invention relates to a foam soap case which is placed in a toilet in a public place. For example, in the foam soap case, a sensor capable of detecting motions is operated when a palm is placed between 10 cm and 20 cm from an inlet through which a soap is discharged for the soap to be discharged. In addition, in the bubble soap case, a switch capable of on/off control is formed for the sensor to be turned off when a foam soap is filled.
Patent KR-20200074817-A (KR)
Inventor: CHOI LEE KWON
IPC: A63F13/5378
Filed: 2018-12-17
Abstract: The present invention relates to a multiaccess-based virtual game providing system using 5G wireless communication, which enables a plurality of random accessors to participate in a game through connected smartphones and spectators to watch the game status through a large display screen which is installed in a public place. The multiaccess-based virtual game providing system includes: a game providing server providing a virtual game to terminals connected through 5G wireless communication, and creating a watching image with respect to the virtual game; a watching display outputting the watching image created through the game providing server; and a plurality of user terminals connected to the game providing server through 5G wireless communication to control the game performance of allocated characters in the virtual game. According to the present invention, a game providing server and a large display which are installed on the streets are used to enable a plurality of random accessors to be connected to the virtual game through smartphones. Therefore, game users can play the game through smartphones and spectators can watch the game status through the large display, and thus, a new street entertaining culture can be created.
Patent KR-20200075234-A (KR)
Inventor: KANG HYOUNG SHIK
IPC: B23K26/53
Filed: 2018-12-18
Abstract: According to one embodiment of the present invention, an apparatus for damaging a cut portion to cut a medical glass product may comprise: a laser source bursting an ultrafast laser beam; a beam profile forming unit forming the ultrafast laser beam to allow the ultrafast laser beam to have a plurality of focal lengths to form a thin and elongated profile; a beam radiation unit performing radiation to allow the profile of the formed ultrafast laser beam to be formed inside glass of a medical glass product, such that an inside damage is formed by an internal defect caused by a bulk deformation inside the glass of the medical glass product; and a rotating unit to rotate the medical glass product at a constant rotational speed. Accordingly, provided is a processing method of a medical glass product to minimize the generation of particles when the medical glass product is broken.
Patent KR-20200078774-A (KR)
Inventor: SIM JINWOO
IPC: H01L21/687
Filed: 2018-12-21
Abstract: The present invention provides a transport unit and a substrate processing apparatus including the same which can stably suction and fix members other than a substrate by using a robot. According to the present invention, the substrate processing apparatus comprises a process chamber to perform a prescribed process on a substrate, and a transport unit to transport the substrate and a member to the process chamber. The process chamber includes: a housing having a processing space therein; a support unit to support the substrate in the processing space; a gas supply unit to supply process gas to the processing space; and a plasma source to generate plasma from the process gas. The support unit includes: a support body on which the substrate is placed; and an edge ring provided to surround the substrate placed on the support body, and provided to be detached from the support body. The transport unit includes a robot arm and a hand coupled to the robot arm. The hand may be provided with a plurality of first vacuum holes provided to vacuum-suction the substrate, and a plurality of second vacuum holes provided to vacuum-suction the edge ring. A first circle formed by a combination of the plurality of first vacuum holes and a second circle formed by a combination of the plurality of second vacuum holes are provided concentrically. The radius of the first circle may be provided to be smaller than the radius of the second circle.
Patent KR-20200078125-A (KR)
Inventor: YUN GUM YOUNG
IPC: H04R7/04
Filed: 2018-12-21
Abstract: The present invention provides a vibration generator which improves efficiency of sound and vibration transfer. The vibration generator comprises: a housing forming an inner space having at least a part thereof opened; a coil coupled to the housing and including a winding unit; a vibrator reciprocating in a vertical direction in the inner space by an electromagnetic force generated between the coils; an elastic body connecting the housing and the vibrator; and a vibration transfer unit coupled to the elastic body and having at least a part thereof exposed to the part in which the inner space is opened.
Patent KR-20200079646-A (KR)
Inventor: HWA IM JOO
IPC: F25B1/10
Filed: 2018-12-26
Abstract: The present invention relates to a load active heat pump combining one-level parallel compressors. The load active heat pump combining one-level parallel compressors comprises: a first compressor and a second compressor which are parallel in one level; a condenser to condense refrigerant gas discharged from the first and second compressors; an evaporator wherein a refrigerant discharged from the condenser flows into the evaporator to evaporate; and an expansion valve installed on a first collection line connecting the condenser and the evaporator. An inlet side of the first compressor is connected to the evaporator through an inflow line of the first compressor. An outlet side of the first compressor is connected to an inflow side of the condenser through a first discharge line. A second discharge line connected to an inlet side of the second compressor for series connection with the second compressor is further installed on the outlet side of the first compressor. An inflow line of the second compressor is connected to the center of the second discharge line. A three-way valve switching to connect the first compressor and the second compressor in series or connect the evaporator and the second compressor is installed on a connection portion of the second discharge line and the inflow line of the second compressor. An outlet side of the second compressor and an inlet side of the condenser are connected to each other through a discharge line. A check valve is installed in the middle of the discharge line. A bypass line branches from the discharge line to be connected to an inlet side of the evaporator. An opening/closing valve is installed on the bypass line. The present invention is capable of sequential load control in accordance with a load change by control of a bypass valve and the bypass line and series/parallel driving the first and second compressors and is also capable of fine control.
Patent KR-20200080547-A (KR)
Inventor: CHANG MIN KIM
IPC: G06Q50/08
Filed: 2018-12-27
Abstract: Disclosed are a system and a method for speculating the composition of a cross section of a building. The system comprises: an input module which receives information on the building to be speculated; an outer wall cross-sectional composition speculating module which speculates the cross-sectional composition of an outer wall of the building to be speculated by comparing the information input from the input module with other existing building information; and an outer wall cross-sectional composition output module which outputs the cross-sectional composition speculated in the outer wall cross-sectional composition speculating module. According to the system and the method for speculating the building cross-sectional composition, when a drawing is lost or damaged and it is not possible to confirm a composition material or a cross-sectional thickness of the building, the cross-sectional composition material and the cross-sectional composition thickness of the wall can be predicted by comparing the information on the relevant building with other existing building cases. In addition, the system is configured to take an image of the outer wall of the relevant building to perform analysis, so that a finishing material can be speculated. Accordingly, an energy performance simulation of the existing building without drawings is performed, and the accuracy of an energy performance evaluation is increased.
Patent KR-20200080667-A (KR)
Inventor: LIM CHAE HOON
IPC: G06Q50/10
Filed: 2018-12-27
Abstract: Disclosed is a vehicle multimedia service providing method for uploading or downloading various types of multimedia information for each link when driving a vehicle. The vehicle multimedia service providing method of the present invention comprises the following steps of: detecting, by a vehicle terminal, a position of a vehicle; detecting, by the vehicle terminal, a link ID of a link corresponding to the position of the vehicle; transmitting, by the vehicle terminal, the link ID to a service server; receiving, by the vehicle terminal, multimedia information matched with the link ID from a service server; and outputting, by the vehicle terminal, the multimedia information received from the service server.
Patent KR-20200081698-A (KR)
Title: Air conditioner for vehicle
Inventor: MIN YO CHAN
IPC: B60H1/32
Filed: 2018-12-28
Abstract: The present invention relates to an air conditioner for a vehicle. More specially, the air conditioner for a vehicle enables a shatterproof plate to be provided on a lower side of a first and a second evaporator so that condensate easily passes therethrough and the collected condensate can be prevented from being scattered by air flow. Therefore, the air conditioner for a vehicle does not impair the comfort of passengers.
Patent KR-20200082132-A (KR)
Inventor: SHIN TAE YOUNG
IPC: G16H20/10
Filed: 2018-12-28
Abstract: The present invention provides a big data management system, a big data management method, and a computer-readable storage medium of a safe docking apparatus based on blockchain. Accordingly, by collecting and managing data with respect to drug administration from the safe docking apparatus, a reporting system of all high-risk drugs can be established with high reliability.
Patent KR-20180004335-A (KR)
Title: 발광 엘리먼트
Inventor: SHITAGAKI SATOKO
IPC: H01L51/50
Filed: 2012-02-06
Abstract: 본 발명은 외부 양자 효율이 높은 발광 엘리먼트에 관한 것이다.  또한, 본 발명은 수명이 긴 발광 엘리먼트에 관한 것이다.  한쌍의 전극 사이에 인광 화합물, 제1의 유기 화합물 및 제2의 유기 화합물을 함유하는 발광층을 포함하는 발광 엘리먼트가 제공되며, 제1의 유기 화합물 및 제2의 유기 화합물의 조합은 여기착물(여기된 착물)을 형성한다.  발광 엘리먼트는 여기착물의 발광 스펙트럼과 인광 화합물의 흡수 스펙트럼 사이의 중첩을 이용하여 에너지를 이동시켜 에너지 이동 효율이 높다.  그러므로, 외부 양자 효율이 높은 발광 엘리먼트를 얻을 수 있다.
Patent KR-20180014880-A (KR)
Title: 음성-대-텍스트 변환의 햅틱 증대를 위한 시스템들 및 방법들
Inventor: HEUBEL ROBERT W
IPC: G06F3/16
Filed: 2010-10-27
Abstract: 사용자 인터페이스에서 음성-대-텍스트 햅틱 증대를 제공하기 위한 시스템들 및 방법이 개시된다.  예를 들어, 가청 스피치 정보를 햅틱 효과로 변환하기 위한 하나의 개시된 시스템은 마이크로폰 및 마이크로폰과 통신하는 프로세서를 포함하고, 프로세서는 마이크로폰으로부터 음성과 연관된 오디오 신호를 수신하고, 오디오 신호의 특성을 결정하고, 특성에 적어도 부분적으로 기초하여 액추에이터 신호를 생성하도록 구성되고, 액추에이터 신호는 액추에이터로 하여금 햅틱 효과를 출력하게 하도록 구성된다.
Patent KR-20180019781-A (KR)
Title: 혈액응고시간 연장제
Inventor: MORIKAWA CHIZURU
IPC: C12Q1/56
Filed: 2010-05-20
Abstract: 혈액응고시간을 충분히 연장하고, 또한 광학적 변화를 증강시켜, 혈액응고능 검사를 정확하고 고감도에 실시할 수 있는 시약을 제공한다. 본 발명은 다음 식(1) 
H 2 NNHC(CH 2 )=NH   (1)         
로 표시되는 아미노구아니딘 화합물 또는 그 산부가염을 유효성분으로 하는 혈액응고시간 연장제를 제공한다.
Patent KR-20180049037-A (KR)
Title: 수지 조성물, 해당 조성물로 이루어지는 성형체 및 파이프
Inventor: KANAYA HIROTAKA
IPC: C08L23/08
Filed: 2016-10-03
Abstract: 본 발명은 내충격성, 가공성, 내열성이 우수한 염화 바이닐계 수지 조성물, 및 상기의 수지 조성물로 이루어지는 성형체, 특히 파이프를 제공하는 것을 목적으로 한다.  본 발명에 의하면, 염화 바이닐계 수지(A) 100질량부에 대해서, 고무계 충격 흡수재(B) 3∼15질량부, 변성 올레핀 왁스(C) 0.1∼10질량부를 포함하고, 하기 요건(I)∼(III)을 만족시키는 수지 조성물, 및 이 수지 조성물로 이루어지는 성형체, 특히 파이프가 제공된다.  이 수지 조성물은 이하의 요건(I)∼(III)을 만족시킨다.  (I) 염화 바이닐계 수지(A)의 염소 함유율이 55∼75질량%이다, (II) 고무계 충격 흡수재(B)의 시차 주사 열량 측정(DSC)에 있어서의 유리 전이 온도(Tg)가 0℃ 이하이다, (III) 변성 올레핀 왁스(C)가 할로젠 및 카복실산 유도체로부터 선택되는 적어도 1종의 극성기를 함유하고, 극성기의 함유율이 0.1∼50질량%의 범위에 있다.
Patent KR-20180125434-A (KR)
Title: 격리된 광학 인코더를 가진 로봇 구동
Inventor: POOLE DENNIS
IPC: H02K11/22
Filed: 2017-03-21
Abstract: 프레임, 프레임에 연결된 광학 센서와 환경 분리 방벽을 포함하는 장치. 프레임이 모터 조립체의 하우징에 부착되도록 구성된다 가까운 상기 하우징을 통하여 확장하는 개구. 광 검출 방법은 카메라를 포함한다. 환경 분리 방벽이 개구에 상기 하우징에 연결되도록 구성되며, 여기서 환경 분리 방벽이 있다 가장 적게 부분적으로 카메라가 환경 분리 방벽과 개구를 통과해 상기 하우징 내부에 이미지를 뷰잉할 수 있게 하기 위해 카메라에 대해 투명하고 위치된다.
Patent KR-20180064415-A (KR)
Title: 인터류킨-17 (il-17) 길항제를 사용하여 비-방사선촬영상 축성 척추관절염을 치료하는 방법
Inventor: MANN CHRISTIAN
IPC: C07K16/24
Filed: 2016-10-14
Abstract: 본 개시내용은 IL-17 길항제, 예를 들어 세쿠키누맙을 사용하여 비-방사선촬영상 축성 척추관절염 (nr-axSpA) 환자를 치료하고 이들 환자에서 구조적 손상의 진행을 억제하는 방법에 관한 것이다.  또한, nr-axSpA 환자를 치료하고 이들 환자에서 구조적 손상의 진행을 억제하기 위한 IL-17 길항제, 예를 들어 IL-17 항체, 예컨대 세쿠키누맙의 용도, 뿐만 아니라 개시된 용도 및 방법에 사용하기 위한 의약, 투여 요법, 제약 제제, 투여 형태 및 키트가 본원에 개시된다.
Patent KR-20180067593-A (KR)
Title: N,n-디알킬아닐린 용매를 함유하는 제형
Inventor: BEALLE GAEELLE
IPC: C09D11/36
Filed: 2016-09-09
Abstract: 본 발명은 유기 도체, 유기 반도체, 유기 형광 화합물, 유기 인광 화합물, 유기 광흡수제 화합물, 유기 감광성 화합물, 유기 광민감화제, 및 기타 유기 광활성 물질로부터 선택되는, 전이금속, 희토류, 란탄족 및 악티늄족의 유기금속성 착물로부터 선택되는 적어도 하나의 유기 기능성 물질, 및 적어도 하나의 특정 N,N-디알킬아닐린을 포함하는 유기 전자 소자의 제조를 위한 제형에 관한 것이다.
Patent KR-20180083929-A (KR)
Title: 폴딩 단말
Inventor: LIN YUGUI
IPC: H04M1/02
Filed: 2016-12-29
Abstract: 본 발명이 개시하는 폴딩 단말은, 본체, 자성 흡인 어셈블리 및 자성 완화 어셈블리를 포함하고; 본체는 순차적으로 연결된 상부, 구부림부 및 하부를 포함하며; 상부와 하부 사이의 협각이 0도일 경우, 자성 흡인 어셈블리는 흡인되고; 상부와 하부 사이의 협각이 180도 보다 크거나 작을 경우, 자성 완화 어셈블리는 서로 배척한다. 본 발명이 제공하는 폴딩 단말은 상부와 하부에 각각 자성 완화 어셈블리를 설치하는 것을 통해 상부가 하부에 상대하여 구부러지기만 하면, 사용자가 자성 완화 어셈블리 사이의 배척력을 바로 감지할 수 있도록 하여, 폴딩 단말의 신뢰성을 향상하며; 동시에 자성 흡인 어셈블리를 각각 상부와 하부의 단부에 설치하여 상부와 하부 사이의 협각이 0도일 경우, 자성 흡인 어셈블리가 흡인되도록 함으로써, 신뢰성 비교적 강하고, 맞붙어진 상태가 유지될 수 있는 폴딩 단말을 제공한다. 본 발명은 다른 하나의 폴딩 단말을 더 공개한다.
Patent KR-20180083439-A (KR)
Title: 호흡 가스를 제공하기 위해 핵 환경에서 사용 가능한 시스템
Inventor: ARAFAT YASIR
IPC: G21D3/04
Filed: 2016-10-25
Abstract: 핵 환경에서 사용 가능한 시스템은 전개 시스템과 유체 연통하는 액화 호흡성 가스의 저장조를 제공한다.  전개 시스템은 배터리 뱅크에 저장되는 전력을 생성하기 위해 기계적으로 연결되는 전기 발전기를 가동시키는 가스 터빈을 작동시키기 위해 저장조로부터의 호흡성 가스 스트림을 사용한다.  호흡성 가스의 스트림은 이후에 터빈으로부터 유동하며, 주 제어실의 내부 구역과 열교환 관계로 위치되는 열교환기와 제어실에 호흡성 가스를 제공하는 출구 사이에 분배된다.  열교환기를 통해서 유동하는 스트림의 부분은 주 제어실을 냉각시킨다.  주 제어실에 호흡성 가스를 제공하는 스트림의 다른 부분은 또한 제어실 내의 분위기를 재순환시킨다.